Turbine blade

Turbine blades used in jet engines can be made from such materials as nickel-based superalloys. We can, in principle, even use ceramic materials such as zirconia or other alloys based on steels. In some cases, the blades may have to be coated with a thermal barrier coating (TBC) to minimize exposure of the blade material to high temperatures.
Locomotive vehicles on railway are connected together by a linked mechanism system of a coupling. The first time, we used a chain and a screw type coupler. They are not used in these days because problem of safety and new technology.
Now days, common use an automatic coupler such as A knuckle type coupler (or Janney coupler) and a SA3 coupler. For required many purpose and functions, It has been developed various types and multi functioned of couplers such as full automatic coupler, electric coupler still now.
- Properties required Knuckle coupler needs these properties. i. Physical - High Density ii. Chemical - High Corrosion resistance, High Oxidation resistance iii. Mechanical - High Strength, Hardness, Toughness iv. Economic – Low cost

Locomotive vehicles on railway are connected together by a linked mechanism system of a coupling. The first time, we used a chain and a screw type coupler. They are not used in these days because problem of safety and new technology.
Now days, common use an automatic coupler such as A knuckle type coupler (or Janney coupler) and a SA3 coupler. For required many purpose and functions, It has been developed various types and multi functioned of couplers such as full automatic coupler, electric coupler still now.
- Properties required Knuckle coupler needs these properties. i. Physical - High Density ii. Chemical - High Corrosion resistance, High Oxidation resistance iii. Mechanical - High Strength, Hardness, Toughness iv. Economic – Low cost
Locomotive vehicles on railway are connected together by a linked mechanism system of a coupling. The